<template>
	<el-form>
		<el-form-item>
			<el-radio :value="1" v-model='radioValue'>
				不填，允许的通配符[, - * /]
			</el-radio>
		</el-form-item>

		<el-form-item>
			<el-radio :value="2" v-model='radioValue'>
				每年
			</el-radio>
		</el-form-item>

		<el-form-item>
			<el-radio :value="3" v-model='radioValue'>
				周期从
				<el-input-number v-model='cycle01' :min='fullYear' :max="2098"/>
				-
				<el-input-number v-model='cycle02' :min="cycle01 ? cycle01 + 1 : fullYear + 1" :max="2099"/>
			</el-radio>
		</el-form-item>

		<el-form-item>
			<el-radio :value="4" v-model='radioValue'>
				从
				<el-input-number v-model='average01' :min='fullYear' :max="2098"/>
				年开始，每
				<el-input-number v-model='average02' :min="1" :max="2099 - average01 || fullYear"/>
				年执行一次
			</el-radio>

		</el-form-item>

		<el-form-item>
			<el-radio :value="5" v-model='radioValue'>
				指定
				<el-select clearable v-model="checkboxList" placeholder="可多选" multiple :multiple-limit="8">
					<el-option v-for="item in 9" :key="item" :value="item - 1 + fullYear" :label="item -1 + fullYear"/>
				</el-select>
			</el-radio>
		</el-form-item>
	</el-form>
</template>

<script setup>
const emit = defineEmits(['update'])
const props = defineProps({
	cron: {
		type: Object,
		default: {
			second: "*",
			min: "*",
			hour: "*",
			day: "*",
			month: "*",
			week: "?",
			year: ""
		}
	},
	check: {
		type: Function,
		default: () => {
		}
	}
})
const fullYear = ref(0)
const maxFullYear = ref(0)
const radioValue = ref(1)
const cycle01 = ref(0)
const cycle02 = ref(0)
const average01 = ref(0)
const average02 = ref(1)
const checkboxList = ref([])
const checkCopy = ref([])
const cycleTotal = computed(() => {
	cycle01.value = props.check(cycle01.value, fullYear.value, maxFullYear.value - 1)
	cycle02.value = props.check(cycle02.value, cycle01.value + 1, maxFullYear.value)
	return cycle01.value + '-' + cycle02.value
})
const averageTotal = computed(() => {
	average01.value = props.check(average01.value, fullYear.value, maxFullYear.value - 1)
	average02.value = props.check(average02.value, 1, 10)
	return average01.value + '/' + average02.value
})
const checkboxString = computed(() => {
	return checkboxList.value.join(',')
})
watch(() => props.cron.year, value => changeRadioValue(value))
watch([radioValue, cycleTotal, averageTotal, checkboxString], () => onRadioChange())

function changeRadioValue(value) {
	if (value === '') {
		radioValue.value = 1
	} else if (value === "*") {
		radioValue.value = 2
	} else if (value.indexOf("-") > -1) {
		const indexArr = value.split('-')
		cycle01.value = Number(indexArr[0])
		cycle02.value = Number(indexArr[1])
		radioValue.value = 3
	} else if (value.indexOf("/") > -1) {
		const indexArr = value.split('/')
		average01.value = Number(indexArr[1])
		average02.value = Number(indexArr[0])
		radioValue.value = 4
	} else {
		checkboxList.value = [...new Set(value.split(',').map(item => Number(item)))]
		radioValue.value = 5
	}
}

function onRadioChange() {
	switch (radioValue.value) {
		case 1:
			emit('update', 'year', '', 'year')
			break
		case 2:
			emit('update', 'year', '*', 'year')
			break
		case 3:
			emit('update', 'year', cycleTotal.value, 'year')
			break
		case 4:
			emit('update', 'year', averageTotal.value, 'year')
			break
		case 5:
			if (checkboxList.value.length === 0) {
				checkboxList.value.push(checkCopy.value[0])
			} else {
				checkCopy.value = checkboxList.value
			}
			emit('update', 'year', checkboxString.value, 'year')
			break
	}
}

onMounted(() => {
	fullYear.value = Number(new Date().getFullYear())
	maxFullYear.value = fullYear.value + 10
	cycle01.value = fullYear.value
	cycle02.value = cycle01.value + 1
	average01.value = fullYear.value
	checkCopy.value = [fullYear.value]
})
</script>

<style lang="scss" scoped>
.el-input-number--small, .el-select, .el-select--small {
	margin: 0 0.2rem;
}

.el-select, .el-select--small {
	width: 18.8rem;
}
</style>